نتایج جستجو برای: mcnp code

تعداد نتایج: 168334  

شامرادی‌فر, هادی, شهابی, ایرج, شیرانی, احمد,

In this work, the Isfahan Miniature Neutron Source Reactor (MNSR ) has been simulated using the MCNP code, and reactivity worth of flooding the inner irradiation sites of this reactor in an accident has been calculated. Also, by inserting polyethylene capsules containing water inside the inner irradiation sites, reactivity changes of this reactor in same such accident have been measured, the re...

Fatemeh Sadat Rasouli Seyed Farhad Masoudi,

Introduction BNCT is an effective method to destroy brain tumoral cells while sparing the healthy tissues. The recommended flux for epithermal neutrons is 109 n/cm2s, which has the most effectiveness on deep-seated tumors. In this paper, it is indicated that using D-T neutron source and optimizing of Beam Shaping Assembly (BSA) leads to treating brain tumors in a reasonable time where all IAEA ...

Journal: :Baghdad Science Journal 2022

In this paper, the Monte Carlo N-Particle extended computer code (MCNP) were used to design a model of European Sodium-cooled Fast Reactor. The multiplication factor, conversion delayed neutrons fraction, doppler constant, control rod worth, sodium void masses for major heavy nuclei, radial and axial power distribution at high burnup are studied. results show that reactor breeds fissile isotope...

Journal: :iranian journal of nuclear medicine 2003
kamal haddad mehrosadat alavi yeganeh gorji

determination of the total body absorbed dose consists of two parts: beta radiation absorbed dose and gamma radiation absorbed dose. the first part is generally determined by clinical data, while the second part has a parameter called absorbed ratio and is determined by computational methods. the monte-carlo computational methods have been shown to be the most suitable in determination of the a...

2012
Fatemeh Sadat Rasouli Seyed Farhad Masoudi

Introduction BNCT is an effective method to destroy brain tumoral cells while sparing the healthy tissues. The recommended flux for epithermal neutrons is 10 n/cms, which has the most effectiveness on deep-seated tumors. In this paper, it is indicated that using D-T neutron source and optimizing of Beam Shaping Assembly (BSA) leads to treating brain tumors in a reasonable time where all IAEA re...

Journal: :Journal of Radioanalytical and Nuclear Chemistry 2021

Abstract Radioactive mercury waste constitutes a significant challenge, as no approved disposal concept yet exists for such in Germany. This work describes decontamination and measurement procedure possible clearance of from nuclear facilities release into reuse or conventional hazardous to reduce the amount repository. The setup were developed evaluated including Monte-Carlo N-Particle® Transp...

Journal: :Journal of neurochemistry 2001
I D Grachev A Swarnkar N M Szeverenyi T S Ramachandran A V Apkarian

In our most recent study of normal aging, we found decreased concentration of multiple chemicals in the brain of middle-aged subjects, as compared with younger subjects using in vivo proton magnetic resonance spectroscopy ((1)H-MRS). We hypothesized that these age-dependent differences in brain chemistry changes might be a reflection of the multichemical-networking-profile (MCNP) changes during...

Seyed Pezhman Shirmardi, Zahra Mohamad Darvishi

Introduction: There are many ways to treat cancer and pain relief. One of the methods is radiopharmaceutical therapy. Indium 111-rituximab contains the radioisotope indium-111 and rituximab. The Indium-111, after decay, emits gamma rays with energies of 245 KeV and 171 KeV, and beta-radiation of 26 KeV. In this study, the absorbed dose of 111In-Rituximab in human body was calcu...

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